Struct Item 

pub struct Item<T>(/* private fields */);

TODO Docuemnt

Implementations

impl<T> Item<T>

pub fn try_get(&self) -> Option<&T>

where T: for<'de> Deserialize<'de> + 'static,

Attempt to get an immutable reference to the deserialized value of type T. Will return None if the value has not yet been deserialized, as we need a mutable reference to mutate the entry to save the deserialized value.

Example

use anymap_serde::SerializableAnyMap;
use serde_json::json;

let mut map: SerializableAnyMap = serde_json::from_value(json!({ "u16": 42 })).unwrap();
let mut old = map.insert(43u16).unwrap();

assert_eq!(old.try_get(), None); // not deserialized yet
old.get(); // Trigger deserialization
assert_eq!(old.try_get(), Some(&42));

pub fn get(&mut self) -> Result<&T, DeserializerError>

where T: Serialize + for<'de> Deserialize<'de> + 'static,

Attempt to get an immutable reference to the deserialized value of type T, lazily deserializing if necessary. We need a mutable reference in order to save the deserialized value to the entry

Example

use anymap_serde::SerializableAnyMap;
use serde_json::json;

let mut map: SerializableAnyMap = serde_json::from_value(json!({ "u32": 42 })).unwrap();
let mut old = map.insert(43u32).unwrap();

assert_eq!(old.get().ok(), Some(&42));

let mut map: SerializableAnyMap = serde_json::from_value(json!({ "u32": "boom" })).unwrap();
let mut old = map.insert(43u32).unwrap();

assert_eq!(old.get().is_err(), true);
assert_eq!(old.get().is_err(), true);

pub fn get_mut<'a>(&'a mut self) -> Result<WriteGuard<'a, T>, DeserializerError>

where T: for<'de> Deserialize<'de> + Serialize + 'static,

Attempt to an mutable reference to the deserialized value of type T, lazily deserializing if necessary.

Example

use anymap_serde::SerializableAnyMap;
use serde_json::json;
use std::ops::DerefMut;
let mut map: SerializableAnyMap = serde_json::from_value(json!({ "u16": 42 })).unwrap();

let mut old = map.insert(43u16).unwrap();

*old.get_mut().unwrap() += 100;

assert_eq!(old.get_mut().unwrap().deref_mut(), &mut 142u16);

pub fn into_inner(self) -> Result<T, DeserializerError>

where T: for<'de> Deserialize<'de> + 'static,

Attempt to extract the inner value by deserializing if necessary.

Example

use anymap_serde::SerializableAnyMap;
use serde_json::json;

let mut map: SerializableAnyMap = serde_json::from_value(json!({ "u32": 42 })).unwrap();
let item = map.insert(41u32).unwrap();

assert_eq!(item.into_inner().unwrap(), 42u32);